/**

 * Test that failure to convert to JPEG returns NULL

 *

 * We are creating an image, set its width to zero, and pass this image to

 * `gdImageJpegPtr()` which is supposed to fail, and as such should return NULL.

 *

 * See also <https://github.com/libgd/libgd/issues/381>

 */

#include "gd.h"

#include "gdtest.h"

int main()

{

    gdImagePtr src, dst;

    int size;

    src = gdImageCreateTrueColor(1, 10);

    gdTestAssert(src != NULL);

    src->sx = 0; /* this hack forces gdImageJpegPtr() to fail */

    dst = gdImageJpegPtr(src, &size, 0);

    gdTestAssert(dst == NULL);

    gdImageDestroy(src);

    return gdNumFailures();

}